Embryology: Ovarian Cycle, Genetics, Embryonic Development------------------------------

20 Questions | Total Attempts: 17

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Embryology: Ovarian Cycle, Genetics, Embryonic Development------------------------------


Questions and Answers
  • 1. 
    In what days does the embryo start to bend?
    • A. 

      11-12 days

    • B. 

      16-18 days

    • C. 

      20-21 days

    • D. 

      14-15 days

  • 2. 
    What week does the neural tube START to close
    • A. 

      Week 1

    • B. 

      Week 2

    • C. 

      Week 3 

    • D. 

      Week 4

  • 3. 
    The HOX/Homeobox gene is responsible for developing what part of the embryo
    • A. 

      Craniocaudal region

    • B. 

      Left-sided organs

    • C. 

      Musculature of the limbs

    • D. 

      Ventralization of organs

  • 4. 
    There are some points in meiosis where the oocyte line is paused until certain conditions are met. What are these stages?
    • A. 

      Prophase I and Telophase II

    • B. 

      Telophase I and Prophase II

    • C. 

      Metaphase I and Anaphase II

    • D. 

      Prophase I and Metaphase II

  • 5. 
    In which of these situations does a primary oocyte turn into a secondary oocyte
    • A. 

      When a follicle is formed

    • B. 

      When it is released from the primary follicle

    • C. 

      When it turns atretic

    • D. 

      When it is released from the secondary follicle

  • 6. 
    Which of the following structures is a precursor to the forebrain
    • A. 

      Prechordal plate

    • B. 

      Notochord

    • C. 

      The first visceral arch

    • D. 

      The second visceral arch

  • 7. 
    This is a condition in which the visceral organs are placed in the opposite direction
    • A. 

      Eisenmenger's syndrome

    • B. 

      Visceral Mirroring

    • C. 

      Situs Invertus

    • D. 

      Fetus deletus

  • 8. 
    The contiguous deletion of chromosomes 15q11 to 15q13 can be seen in what disorder?
    • A. 

      Angelman syndrome

    • B. 

      Prader-Willi syndrome

    • C. 

      Both

    • D. 

      Neither

  • 9. 
    The protein SHH (Sonic hedgehog protein) is synthesized by what?
    • A. 

      Trophoblast

    • B. 

      The yolk sac

    • C. 

      Somite C3 to C5

    • D. 

      Notochord

  • 10. 
    BMP4 along with FGF8 can develop which part of the embryo
    • A. 

      Ventral Side

    • B. 

      Dorsal Side

    • C. 

      Both

    • D. 

      Neither

  • 11. 
    This is a type of chromosomal disorder in which parts of the chromosome breaks under certain conditions
    • A. 

      The presence of fragile sites

    • B. 

      Contiguous Gene Deletion

    • C. 

      Genetic Mosaicism

    • D. 

      Nondisjunction

  • 12. 
    Mesoderm derivative responsible for developing the limb musculature of the embryo
    • A. 

      Paraxial Mesoderm

    • B. 

      Somite

    • C. 

      Both

    • D. 

      Neither

  • 13. 
    Which of the following is a precursor to the kidneys
    • A. 

      Intermediate mesoderm

    • B. 

      Lateral plate mesoderm

    • C. 

      Somite

    • D. 

      Notochord

  • 14. 
    Which of the following is a precursor to the Visceral serosa
    • A. 

      Splanchnic Mesoderm

    • B. 

      Somatic Mesoderm

    • C. 

      Both

    • D. 

      Neither

  • 15. 
    Xq27 is the chromosomal abnormality behind what disease?
    • A. 

      Edward's syndrome

    • B. 

      Angelman

    • C. 

      Miller-Dieker

    • D. 

      Fragile X

  • 16. 
    The trilaminar germ disc can be seen in what week?
    • A. 

      Week 1 

    • B. 

      Week 2

    • C. 

      Week 3

    • D. 

      Week 4

  • 17. 
    The epithelial lining of the digestive and respiratory tract can be found in what germ cell derivative?
    • A. 

      Endoderm

    • B. 

      Somatic Mesoderm

    • C. 

      Splanchnic Mesoderm

    • D. 

      Ectoderm

  • 18. 
    BMP can develop the dorsal side of the embryo when it interacts with which of the following molecules
    • A. 

      FGF-8

    • B. 

      Noggin, Follistatin, Chordin

    • C. 

      Both

    • D. 

      SHH

  • 19. 
    Serotonin activates Mad-3. Mad3 can activate which of the following molecules?
    • A. 

      PITX3

    • B. 

      FGF

    • C. 

      Nodal

    • D. 

      Homeobox

  • 20. 
    These substances play a role in cranio-caudal development
    • A. 

      Vitamin A1

    • B. 

      HOX

    • C. 

      Both

    • D. 

      Neither

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